benifits of different certifying agencies

in the moder era of organics, and the NOP. individual certification agencies are all forced to enforce the vary same set of rules that all other organic certifiers are enforcing. with this restriction in place, has the value of high end certifiers been lost or degraded? out here in OR, oregon tilth was king of the road, but now, in reality does their stamp mean anything different than the ODA organic cert? how much more are you willing to pay for a stamp of approval from a "heritage certifier" than from a new kid on the block? out here oregon tilth can easily be 2x the cost plus they charge a percent of gross. does a high end certifier's stamp improve your bottom line over a generic organic cert? if so how?